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39565

Sigma-Aldrich

1,3-Dimethylbarbituric acid

≥99.0% (T)

Sinónimos:

1,3-Dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrione

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About This Item

Fórmula empírica (notación de Hill):
C6H8N2O3
Número de CAS:
769-42-6
Peso molecular:
156.14
Beilstein/REAXYS Number:
139810
EC Number:
212-211-7
MDL number:
MFCD00006675
UNSPSC Code:
12352100
PubChem Substance ID:
57649861
NACRES:
NA.22

Quality Level

200

assay

≥99.0% (T)

form

solid

ign. residue

≤0.1%

mp

121-123 °C (lit.)
123-126 °C

solubility

hot water: soluble 0.5 g/10 mL, clear, colorless to faintly yellow

SMILES string

CN1C(=O)CC(=O)N(C)C1=O

InChI

1S/C6H8N2O3/c1-7-4(9)3-5(10)8(2)6(7)11/h3H2,1-2H3

InChI key

VVSASNKOFCZVES-UHFFFAOYSA-N

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General description

1,3-Dimethylbarbituric acid (1,3-Dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrione) is an active methylene compound. It undergoes hollow Pd6 water-soluble cage, [{(tmen)Pd}6(timb)4](NO3)12 (tmen= N,N,N′,N′-tetramethylethylenediamine, timb=1,3,5-tris(1-imidazolyl)benzene)-catalyzed Knoevenagel condensation reaction with pyrene-1-carboxaldehyde. It undergoes self-sorted Pd7 molecular boat having an internal nanocavity (catalyst)-assisted Knoevenagel condensation reaction with various aromatic aldehydes. It has been synthesized by reacting 1,3-dimethylurea, malonic acid and acetic anhydride in acetic acid. It is widely used for the synthesis of various synthetic intermediates and heterocyclic compounds.

Application

1,3-Dimethylbarbituric acid may be used in the following studies:
  • Enantioselective synthesis of isochromene pyrimidinedione derivatives having five stereocenters, via one-pot Michael-Knoevenagel condensation-inverse-electron-demand hetero-Diels-Alder reaction.
  • Synthesis of 5-aryl-6-(alkyl- or aryl-amino)-1,3-dimethylfuro [2,3-d]pyrimidine derivatives.
  • Microwave promoted indirect functionalization of alcohols, via spirocyclisation employing a sequential one-pot Ir(III)/Pd(0) catalyzed process.

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

hcodes

H302,H318

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificados de análisis (COA)

Lot/Batch Number
WXBD6344V
WXBD6201V
WXBD5549V
WXBD4044V
WXBD3044V

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Sigma-Aldrich

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4-Aminoantipyrine analytical standard

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4-Aminoantipyrine reagent grade

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Bor-Cherng Hong et al.
Organic letters, 14(2), 448-451 (2011-12-27)
Synthesis of isochromene pyrimidinedione derivatives having five stereocenters has been achieved by a one-pot Michael-Knoevenagel condensation-inverse-electron-demand hetero-Diels-Alder reaction of α, β-unsaturated aldehydes, olefinic nitroalkanes, and 1,3-dimethylbarbituric acid via a one-pot strategy with excellent diastereo- and enantioselectivities (up to 99% ee).
Dipak Samanta et al.
Chemical communications (Cambridge, England), 49(39), 4307-4309 (2013-01-09)
Unique three-component self-assembly of a cis-blocked 90° Pd(II) acceptor with a mixture of tri- and tetra-imidazole donors led to the self-sorting of a Pd7 molecular boat with an internal nanocavity, which catalyses the Knoevenagel condensation of a series of aromatic
Christian Löfberg et al.
Chemical communications (Cambridge, England), (48)(48), 5000-5002 (2006-12-06)
Microwave assisted indirect functionalization of alcohols with 1,3-dimethylbarbituric acid followed by spirocyclisation employing a sequential one-pot Ir(III)/Pd(0) catalysed process, involving the formation of three new C-C bonds, one spirocyclic ring and one di- or tri-substituted exocyclic alkene, is described.
1, 3-Dimethylbarbituric Acid
Argintaru OA.
e-EROS Encyclopedia of Reagents for Organic Synthesis. (2011)
Shahram Lotfi et al.
Materials science & engineering. C, Materials for biological applications, 76, 153-160 (2017-05-10)
Electrochemical oxidation of trimipramine in the absence and presence of 1,3 dimethyl barbituric acid as a nucleophile in aqueous solution has been studied using cyclic voltammetry and controlled-potential coulometry electrolysis. Voltammetric studies of electro-oxidation of trimipramine were realized in a
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Knoevenagel Condensation Reaction

Knoevenagel Condensation is an organic reaction named after Emil Knoevenagel. It is a classic C-C bond formation reaction and a modification of the Aldol Condensation.

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